492 CXXII, EUPHORBIACE® (BROWN). | Euphorbia, 
Flowering-branches subcylindric or sub 
angular; spine-shields elongated ob- 
triangular, with 2 pairs of spines, the 
larger 1-2 lin. long . : : . 141. £. Nyasse. 
Flowering-branches 3-angled, with 
irregular and often neck-like con- 
strictions; spines very unequal, 2-8 
lin. long . ; - : : . 156. E. buruana. 
Flowering-branches 3-angled, without 
constrictions, with regular deltoid 
teeth ; spines equal, 2 lin. long . . 158. LE. Wakefieldit. 
Flowering branches usually 4—5- (some- 
times 3-) angled. 
Spine-shields small, acute or rounded 
below the spines, but not long- 
decurrent and linear. 
Stem-angles (dried) } lin. or less 
thick; spines grey . : . 188. E. quadrialata. 
Stem-angles (dried) 3 lin. or more 
thick; spines blackish . . 185, HE. garuana. 
Spine-shields decurrent below the 
spines and sometimes extending to 
the flowering eye below as a linear 
horny margin tothe stem-angles. 
Stem-angles with small rounded 
teeth 2-4 lin. apart; spines 
4-1 lin. long or obsolete. . 150. E. quinquecostata. 
Stem-angles with very broadly 
deltoid teeth 5-10 lin. apart or 
without teeth. 
Spine-pairs with a distinct but 
smaller pair of spines at or 
1-2 lin. above their base. 
Stems (dried) 2—4 lin. thick ; 
larger pair of spines very : 
slender 1-24 lin. long . 184. EB, taitensis. 
Stems (dried) 4-6 lin. thick ; 
larger pair of spines stoutly 
needle-like, 2-6 lin. long . 137. HE. subsalsa. 
Spine-pairs with or without 
(often on the same stem) a 
pair of minute prickles or 
points (not distinct spines) 
at their base or above them. 
Ovary far exserted on a pedicel 
much longer than the in- 
volucre. é . 135. E. heterochroma. 
Ovary subsessile, included in : 
the involuere. . 139, E. quadrangularss. 
+7Plant not more (usually distinctly less) than 
1 ft. high (see also 141, E. Nyasse, of 
which only small bits have been seen, 
but is said to be 14 ft. high). 
Spine-shields bearing 4 subequal spines, 
2 directed upwards, 2 downwards . . 140. EB. isacantha. 
